Best way for simple animation

Hi all, I am working on a game and I need to have some simple objects animated like levers etc. Now all of these animations are so simple that can be done inside Unity using animations. And now the question arises : which is the better way to go for, make animations in Unity or import from 3d studio? what are pros and cons of both methods? Do animation support dynamic (movable) colliders? I have read a lot but have not found any info about that. So please share your experience :)